From 0b1461261e140c892d6154b12db26a345c051484 Mon Sep 17 00:00:00 2001
From: Julius Michaelis <gitter@liftm.de>
Date: Fri, 19 Jul 2024 13:29:29 +0900
Subject: [PATCH] wasi32: fix linking with clang invoked from rustc

---
 pkgs/build-support/bintools-wrapper/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/build-support/bintools-wrapper/default.nix b/pkgs/build-support/bintools-wrapper/default.nix
index b64e97345ab5c..17ecae2b635a7 100644
--- a/pkgs/build-support/bintools-wrapper/default.nix
+++ b/pkgs/build-support/bintools-wrapper/default.nix
@@ -243,6 +243,12 @@ stdenvNoCC.mkDerivation {
         basename=$(basename "$variant")
         wrap $basename ${./ld-wrapper.sh} $variant
       done
+    '' + optionalString targetPlatform.isWasi ''
+      wrap ${targetPrefix}wasm-ld ${./ld-wrapper.sh} $ldPath/${targetPrefix}wasm-ld
+      # clang doesn't properly normalize the target triple[1] before using it as a search path,
+      # and rustc passes wasm32-wasi as `-target`, which gets used as is. Work around.
+      # [1] https://github.com/llvm/llvm-project/blob/ad7aeb0ff58ebd29f68adb85c64e8010639e2a76/clang/lib/Driver/Driver.cpp#L6187
+      ln -s $out/bin/${targetPrefix}wasm-ld $out/bin/wasm32-wasi-wasm-ld
     '';
 
   strictDeps = true;